// ============================================================================
//
// Copyright (C) 2006-2007 Dengues
//
// Google Group: http://groups.google.com/group/dengues
// QQ Group: 24885404
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// ============================================================================
package org.dengues.warehouse.viewers.properties;

import org.dengues.core.warehouse.IWarehouseNode;
import org.dengues.warehouse.models.WarehouseNode;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.viewers.IFilter;

/**
 * Qiang.Zhang.Adolf@gmail.com class global comment. Detailled comment <br/>
 * 
 * $Id: Dengues.epf 2008-1-7 qiang.zhang $
 * 
 */
public class SectionFilter implements IFilter {

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.jface.viewers.IFilter#select(java.lang.Object)
     */
    public boolean select(Object toTest) {
        return getWarehouseNode(toTest) != null;
    }

    /**
     * Qiang.Zhang.Adolf@gmail.com Comment method "getWarehouseNode".
     * 
     * @param firstElement
     * @return
     */
    public static WarehouseNode getWarehouseNode(Object firstElement) {
        if (firstElement instanceof WarehouseNode) {
            return (WarehouseNode) firstElement;
        }
        if (firstElement instanceof IAdaptable) {
            Object object = ((IAdaptable) firstElement).getAdapter(IWarehouseNode.class);
            if (object != null) {
                return (WarehouseNode) object;
            }
        }
        return null;
    }
}
